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Finding the Fourth Proportional to 290,403.36, 400,756.68 and 163,119.96

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Solution

The fourth proportional to 290,403.36, 400,756.68 and 163,119.96 is: 225,105.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,403.36 : 400,756.68 = 163,119.96 : x
  2. Step 2: Convert to fraction form
    290,403.36/400,756.68 = 163,119.96/x
  3. Step 3: Cross multiply
    290,403.36x = 400,756.68 × 163,119.96
  4. Step 4: Simplify right side
    290,403.36x = 65,371,413,611.33
  5. Step 5: Solve for x
    x = 65,371,413,611.33/290,403.36
  6. Step 6: Final answer
    x = 225,105.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.